In a large population on a Pacific island, a few individuals had a mutation that caused them to have different colored

eyes. After a hurricane, the population was reduced to only a few individuals, but some of those individuals had the rare
eye color mutation. Now, after many generations, almost half of the population on this island has different colored eyes.
This is an example of _____________________. Fill in the blank(s) with the appropriate word(s).


genetic drift

Biology & Microbiology

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Two technologies that sped progress of the human genome project in 1991 were

A) recombinant DNA technology and PCR. B) amniocentesis and chorionic villus sampling. C) the invention of the Internet and personal computers. D) expressed sequence tags and microarrays.

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In a urine analysis, too much protein in the urine can indicate

a. metabolic problems. b. an infection. c. malfunctioning kidneys. d. prostate cancer. e. bladder cancer.

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Why is it essential that meiosis produce haploid cells?

a)so that the number of chromosomes will double each generation b)to produce haploid offspring c)to prevent the number of chromosomes from doubling each generation d)to produce diploid gametes e)to allow asexual reproduction

Biology & Microbiology

The cells that produce hair made of protein contain a lot of ________, while the cells that produce the oils that coat the hair contain a lot of ________

A) smooth endoplasmic reticulum; lysosomes B) rough endoplasmic reticulum; smooth endoplasmic reticulum C) smooth endoplasmic reticulum; rough endoplasmic reticulum D) microbodies; lysosomes

Biology & Microbiology